Originally Posted by Radioman
Always funny to me the roads that they have sealed like this. Know that it is a cheaper fix than repave.... but wow.
Are you crazy? That is not manual sealing, that is just bad tarmac cracking due to large temperature differences. When it gets hot (over 30C), the lower tarmac spills over and covers the crack. However, because it wasn't properly sealed, it is different than the surface: darker, slippery and melts easier. If you do a curve over a road like that on a hot day, you feel the bike dancing around as the black tar gives under the wheels. Also, drive carefully when it is wet and cold, those black stripes are extremely slippery.
We get this all the time in Portugal, on poor central regions that can't afford better quality tarmac and endure large temperature differences (from -5C to 40C).